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  2. Lead off - Wikipedia

    en.wikipedia.org/wiki/Lead_off

    In baseball, to lead off, or to take a lead, refers to the position a baserunner takes just prior to a pitch, a short distance away from the base the player occupies. [2] A "lead" can also refer to that distance. [2] A typical lead is six to ten feet (two to three meters) from the base. If the lead is too large, the runner risks being picked off.

  3. Viewshed analysis - Wikipedia

    en.wikipedia.org/wiki/Viewshed_Analysis

    An example of using a viewshed analysis on a line segment is from the Wyoming State Office, Bureau of Land Management, in which the office used a viewshed analysis to determine the visibility from National Historic Trails across Wyoming. Within the Rock Springs Field Office area there are five different viewsheds to choose from.

  4. Visibility (geometry) - Wikipedia

    en.wikipedia.org/wiki/Visibility_(geometry)

    In geometry, visibility is a mathematical abstraction of the real-life notion of visibility. Given a set of obstacles in the Euclidean space , two points in the space are said to be visible to each other, if the line segment that joins them does not intersect any obstacles.

  5. Visibility - Wikipedia

    en.wikipedia.org/wiki/Visibility

    The international definition of fog is a visibility of less than 1 km (3,300 ft); mist is a visibility of between 1 km (0.62 mi) and 2 km (1.2 mi) and haze from 2 km (1.2 mi) to 5 km (3.1 mi). Fog and mist are generally assumed to be composed principally of water droplets, haze and smoke can be of smaller particle size.

  6. Visibility graph - Wikipedia

    en.wikipedia.org/wiki/Visibility_graph

    Visibility graphs may be used to find Euclidean shortest paths among a set of polygonal obstacles in the plane: the shortest path between two obstacles follows straight line segments except at the vertices of the obstacles, where it may turn, so the Euclidean shortest path is the shortest path in a visibility graph that has as its nodes the start and destination points and the vertices of the ...

  7. AOL Video - Serving the best video content from AOL and ...

    www.aol.com/video/view/how-to-play-baseball...

    The AOL.com video experience serves up the best video content from AOL and around the web, curating informative and entertaining snackable videos.

  8. Station model - Wikipedia

    en.wikipedia.org/wiki/Station_model

    This allows map users to analyze patterns in atmospheric pressure, temperature, wind speed and direction, cloud cover, precipitation, and other parameters. [1] The most common station plots depict surface weather observations although upper air plots at various mandatory levels are also frequently depicted.

  9. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!